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Research on anti-obesity effect of tea catechins by improving the intestinal environment and its mechanism

Research Project

Project/Area Number 20K19672
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 59040:Nutrition science and health science-related
Research InstitutionFujita Health University (2022-2023)
Jumonji University (2020-2021)

Principal Investigator

Ushiroda Chihiro  藤田医科大学, 医学部, 助教 (30869764)

Project Period (FY) 2020-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2023: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2022: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2021: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2020: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
KeywordsEGCG / 肥満 / 腸内細菌叢
Outline of Research at the Start

腸内細菌叢の改善は生活習慣病予防の鍵になる。近年新たな機序として、フィトケミカル類の腸内環境改善作用を介した抗肥満作用が明らかになり、茶葉に含まれるカテキン((-)-epigallocatechin-3-gallate; EGCG)の腸内環境改善作用を発見した。しかしながら、フィトケミカル類摂取後の腸管からの吸収率は非常に低いため、大腸における作用機序を解析する。

Outline of Final Research Achievements

To clarify whether the anti-obesity effect of tea catechin ((-)-epigallocatechin-3-gallate; EGCG) is due to its function of improving the intestinal environment, we conducted an experiment on the transplantation of gut microbiota. The results showed that the gut microbiota altered by EGCG intake did not directly affect the anti-obesity effect. Furthermore, microarray analysis of the liver and colon revealed that the mechanism of the anti-obesity effect of EGCG is the improvement of lipid metabolism, as previously reported. Furthermore, the possibility of an indirect effect via changes in the gut microbiota was also revealed.

Academic Significance and Societal Importance of the Research Achievements

緑茶に含まれるカテキン((-)-epigallocatechin-3-gallate; EGCG)は様々な生理機能を有し、EGCGの抗肥満作用に関しては、脂質代謝の改善に基づく作用機序が報告されているが、EGCG摂取後の腸管からの吸収は非常に少なく、吸収されなかったEGCGは大腸へ到達し、腸内細菌によって資化・分解される。EGCGが消化管を介して全身へ及ぼす作用に着目し、研究した結果、EGCGの抗肥満作用は脂質代謝改善作用と消化管を介した作用も一部関与している可能性が示唆された。EGCGの抗肥満作用の作用機序の一端を明らかにすることができた。

Report

(5 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Research-status Report
  • 2021 Research-status Report
  • 2020 Research-status Report
  • Research Products

    (15 results)

All 2024 2023 2022 2021 2020

All Journal Article (9 results) (of which Int'l Joint Research: 3 results,  Peer Reviewed: 9 results,  Open Access: 6 results) Presentation (6 results) (of which Int'l Joint Research: 2 results)

  • [Journal Article] Differing Effects of Body Size on Circulating Lipid Concentrations and Hemoglobin A1c Levels in Young and Middle-Aged Japanese Women2024

    • Author(s)
      Iizuka Katsumi、Kobae Kazuko、Yanagi Kotone、Yamada Yoshiko、Deguchi Kanako、Ushiroda Chihiro、Seino Yusuke、Suzuki Atsushi、Saitoh Eiichi、Naruse Hiroyuki
    • Journal Title

      Healthcare

      Volume: 12 Issue: 4 Pages: 465-465

    • DOI

      10.3390/healthcare12040465

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Young Japanese Underweight Women with “Cinderella Weight” Are Prone to Malnutrition, including Vitamin Deficiencies2023

    • Author(s)
      Iizuka Katsumi、Sato Hiroko、Kobae Kazuko、Yanagi Kotone、Yamada Yoshiko、Ushiroda Chihiro、Hirano Konomi、Ichimaru Satomi、Seino Yusuke、Ito Akemi、Suzuki Atsushi、Saitoh Eiichi、Naruse Hiroyuki
    • Journal Title

      Nutrients

      Volume: 15 Issue: 9 Pages: 2216-2216

    • DOI

      10.3390/nu15092216

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Host metabolic benefits of prebiotic exopolysaccharides produced by Leuconostoc mesenteroides2023

    • Author(s)
      Miyamoto Junki、Shimizu Hidenori、Hisa Keiko、Matsuzaki Chiaki、Inuki Shinsuke、Ando Yuna、Nishida Akari、Izumi Ayano、Yamano Mayu、Ushiroda Chihiro、Irie Junichiro、Katayama Takane、Ohno Hiroaki、Itoh Hiroshi、Yamamoto Kenji、Kimura Ikuo
    • Journal Title

      Gut Microbes

      Volume: 15 Issue: 1 Pages: 2161271-2161271

    • DOI

      10.1080/19490976.2022.2161271

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Dietary Emulsifiers Exacerbate Food Allergy and Colonic Type 2 Immune Response through Microbiota Modulation2022

    • Author(s)
      Harusato Akihito、Chassaing Benoit、Dauriat Charl?ne J. G.、Ushiroda Chihiro、Seo Wooseok、Itoh Yoshito
    • Journal Title

      Nutrients

      Volume: 14 Issue: 23 Pages: 4983-4983

    • DOI

      10.3390/nu14234983

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Lycopene intake induces colonic regulatory T cells in mice and suppresses food allergy symptoms.2022

    • Author(s)
      Ushiroda C, Takagi T, Fuke N, Mizushima K, Hirai Y, Higashimura Y, Harusato A, Kamada K, Uchiyama K, Ishikawa T, Aizawa K, Suganuma H, Itoh Y, Naito Y.
    • Journal Title

      Pediatr Allergy Immunol.

      Volume: 33 Issue: 1

    • DOI

      10.1111/pai.13691

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] 母獣ラットの難消化性糖質継続摂取による腸内細菌由来水素ガスの体内分布と胎仔への移行2021

    • Author(s)
      奥田明日香,金高有里,後田ちひろ,山崎優子,倉若美咲樹,田辺賢一,渡辺章夫,下内章人,奥 恒行,中村禎子
    • Journal Title

      安定同位体と生体ガス

      Volume: Vol.13, No.1 Pages: 13-22

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] Epigallocatechin-3-gallate (EGCG) attenuates non-alcoholic fatty liver disease via modulating the interaction between gut microbiota and bile acids2020

    • Author(s)
      Naito Yuji、Ushiroda Chihiro、Mizushima Katsura、Inoue Ryo、Yasukawa Zenta、Abe Aya、Takagi Tomohisa
    • Journal Title

      Journal of Clinical Biochemistry and Nutrition

      Volume: 67 Issue: 1 Pages: 2-9

    • DOI

      10.3164/jcbn.20-39

    • NAID

      130007867953

    • ISSN
      0912-0009, 1880-5086
    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Promotion of wound healing by acetate in murine colonic epithelial cell via c‐Jun N‐terminal kinase activation2020

    • Author(s)
      Nakano Takahiro、Uchiyama Kazuhiko、Ushiroda Chihiro、Kashiwagi Saori、Toyokawa Yuki、Mizushima Katsura、Inoue Ken、Dohi Osamu、Okayama Tetsuya、Yoshida Naohisa、Katada Kazuhiro、Kamada Kazuhiro、Handa Osamu、Ishikawa Takeshi、Takagi Tomohisa、Konishi Hideyuki、Naito Yuji、Itoh Yoshito
    • Journal Title

      Journal of Gastroenterology and Hepatology

      Volume: 35 Issue: 7 Pages: 1171-1179

    • DOI

      10.1111/jgh.14987

    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Journal Article] High-Fat Diet Causes Constipation in Mice via Decreasing Colonic Mucus2020

    • Author(s)
      Mukai Rieko、Handa Osamu、Naito Yuji、Takayama Shun、Suyama Yosuke、Ushiroda Chihiro、Majima Atsushi、Hirai Yasuko、Mizushima Katsura、Okayama Tetsuya、Katada Kazuhiro、Kamada Kazuhiro、Uchiyama Kazuhiko、Ishikawa Takeshi、Takagi Tomohisa、Itoh Yoshito
    • Journal Title

      Digestive Diseases and Sciences

      Volume: 65 Issue: 8 Pages: 2246-2253

    • DOI

      10.1007/s10620-019-05954-3

    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Presentation] ChREBP expression is reduced in insulin-resistant states2023

    • Author(s)
      Chihiro Ushiroda, Yuka Kamei, Kyosuke Kondo, Hiromi Tsuchida, Yusuke Seino, Shizuko Nagao, Daisuke Yabe, Atsushi Suzuki, Katsumi Iizuka
    • Organizer
      the IDF-WPR Congress 2023 and 15th Scientific Meeting of AASD
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] インスリン抵抗性状態ではChREBP活性は減弱する2023

    • Author(s)
      後田ちひろ、亀井優香、今度匡祐、土田宏美、清野祐介、長尾静子、矢部大介、鈴木敦詞、飯塚勝美
    • Organizer
      第66回日本糖尿病学会年次学術集会
    • Related Report
      2023 Annual Research Report
  • [Presentation] 加齢が食事の日差変動に及ぼす影響に関する検討2023

    • Author(s)
      後田ちひろ、皿井正義、宮原良二、佐々木ひと美、飯塚勝美
    • Organizer
      第26回日本病態栄養学会年次学術集会
    • Related Report
      2022 Research-status Report
  • [Presentation] Evaluation of the test meals and hospital meals by using two mobile food records2022

    • Author(s)
      Chihiro Ushiroda, Takuma Ishihara, Mayuka Watanabe, Akemi Ito, Atsushi Suzuki, Eiichi Saitoh, Hitomi Sasaki, Katsumi Iizuka
    • Organizer
      the 22nd International Congress of Nutrition (ICN)
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research
  • [Presentation] 難消化低発酵性食物繊維の小腸からの脂肪吸収に対する抑制効果2021

    • Author(s)
      後田ちひろ,大森瑞紀,倉若美咲樹,奥田明日香,金高有里,田辺賢一,山崎優子,奥恒行,中村禎子
    • Organizer
      日本食物繊維学会
    • Related Report
      2021 Research-status Report
  • [Presentation] 消化管アレルギーモデルマウスにおけるリコピンの肥満細胞抑制作用2021

    • Author(s)
      後田ちひろ、髙木智久、福家暢夫、水島かつら、平井泰子、東村泰希、春里暁人、内山和彦、伊藤義人、内藤裕二
    • Organizer
      日本機能性食品医用学会
    • Related Report
      2021 Research-status Report

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Published: 2020-04-28   Modified: 2025-01-30  

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